tags: [] - coffee/roasting - coffee/roasting/roast-level aliases: - Viennese roast - Continental roast - Light French roast

Vienna Roast¶

Tags: #coffee/roasting #coffee/roasting/roast-level Aliases: Viennese roast, Continental roast, Light French roast Related: Roasting MOC | Dark Roast | French Roast | Development Phase | Roast Profile Status: ✅ Complete

Overview¶

Vienna roast is a dark roast level positioned between Full City+ and French on the roast spectrum, characterised by the onset of second crack, the beginning of visible oil migration to the bean surface, and an Agtron Gourmet score in the approximate range of 35–45. The cup profile sits at the dark end of the bittersweet range — caramel and chocolate notes persist alongside roasty bitterness, while origin acidity is substantially suppressed. Vienna roast has historical associations with Central European café culture, particularly the espresso and blended coffee traditions of Austria, Germany, and Switzerland, where dark roasts with preserved sweetness and moderate bitterness were characteristic of the regional style.

Defining Vienna Roast¶

Vienna roast is positioned between Full City+ (medium-dark border; oily surface just beginning) and French (heavier oil; second crack well underway):

Roast Level	Agtron Gourmet	Drop Conditions
Full City+	40–50	Second crack beginning; hint of oil
Vienna	35–45	Second crack underway; visible oil on surface
French	25–35	Second crack active; heavy oil; dark colour

At Vienna roast temperatures, typically 220–228 °C at drop, second crack is underway. Second crack is a second exothermic fracturing event — less energetic and more sustained than first crack — caused by further CO₂ buildup and structural breakdown at higher temperatures. The bean surface takes on a dark chocolate to near-black appearance with a light oily sheen.

Cup Profile¶

Vienna roast is characterised by the interplay between residual sweetness and rising roastiness:

Aroma: Dark chocolate, caramel (darker, more bitter), light smoke, roasty
Acidity: Low; substantially suppressed; a trace of citric may remain in the lightest Vienna examples
Body: Full; oily compounds contribute to mouthfeel
Flavour: Bittersweet dark chocolate, roasted caramel, mild smoke; origin notes mostly absent but bittersweet balance remains
Aftertaste: Roasty, persistent, moderately bitter

Compared to French roast, Vienna retains more of the bittersweet caramel character and less of the smoky, ashy quality that defines the darker roast levels.

Vienna Roast in Espresso¶

Vienna roast has been widely used in espresso blending, particularly in Central European and Australasian traditions. Its combination of moderate darkness (sufficient for crema development and reduced acidity), residual caramel sweetness, and full body suits classic espresso milk drink recipes. Some specialty roasters producing "third wave" espresso roast at significantly lighter levels than Vienna; the choice reflects regional taste preferences, customer expectations, and the flavour profile intended for the espresso application.

Key Facts¶

Agtron Gourmet 35–45; drop temperature typically 220–228 °C; second crack underway at drop
Positioned between Full City+ and French on the dark roast spectrum
Bean surface: light to moderate oil sheen; dark chocolate to near-black colour
Cup: bittersweet dark chocolate, caramel, low acidity, full body; origin notes largely absent
Historical association with Central European café and espresso traditions
More sweetness retained than French roast; less smoky and ashy character

References¶

Changelog¶

Date	Change
2026-04-27	Note created

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